Fluid-actuated tool.



' c. T. OARNAHAN.

1.11m AT 0L. A 0mm nn 5,1911.

1,031,168. Patented July 2, 1912.

COLUMBIA FLANOCIRAHI Cm. WASHINGTON D c UNITED STATES PATENT OFFICE.

CHARLES T. CARN'AI-IAN, 0F DENVER, COLORADO, ASSIGNOR T0 C. THCARNAHAN MAN- UFACTURING COMPANY, OF DENVER, COLORADO, A CORPORATION OF COLORADO.

FLUID-ACTUATED TOOL.

Specification of Letters Patent.

Patented July 2, 1912.

Original application filed February 12, 1910, Serial No, 543,535. Divided and this application filed October Serial No. 656,620.

To all whom t't may concern:

Be it known that I, CHARLES T. CARNA- HAN, a citizen of the United States, residing at Denver, in the county of Denver and State of Colorado, have invented new and useful Improvements in Fluid Actuated Tools, of which the following is a specification.

My resent invention relates to improve ments' in pneumatic or fluid-actuated tools, and more especially to the class known as sinking drills wherein the tool is supported and manipulated manually and a swivel handle is attached to the tool whereby the latter may be rotated back and forth through a suitable angle without requiring the operator to twist his hand and wrist or shift his grip upon the handle, and the primary object of the invention is to provide an improved swivel handle for tools of this class which is composed of separately formed halves or sections having segmental socket sections which, when the handle sections are united, are held positively in a circumferential groove and between opposed integrally connected and permanently related shoulders on the body of the tool, a strong handle and mounting being thereby provided which can be made and applied inexpensively and with facility and the use of nuts and other separable parts which are liable to loosen, is avoided. a

The present application is a division of my prior application, Serial Nob 13,535 filed February 12, 1910.

In the accompanying drawing :-Figure 1 is a general view partly in section of a sinking drill equipped with a swivel handle constructed in accordance with the present invention; Fig. 2 represents a section on the line 2-2 of Fig. 1; and Fig. 3 is a View similar to Fig. 2 showing the handle sections in separated relation and before application to the tool.

Similar parts are designated by the same reference characters in the several views.

In the present instance the sinking drill comprises a body 1 having a drill rod 2 fitted in one end thereof and the body of the drill is provided with a laterally or radially ex tending handle 3 whereby the drill may be rotated back and forth to the desired extent about the drill rod 2 as an axis. The hose for supplying motive fluid to the drill is at tached to a nipple 1 and this fluid may be controlled by a throttle valve 5 in the manner described fully in my prior application above referred to.

The head 6 of the drill body is formed with a circumferential groove 7, this groove being formed in the solid stock composing the body of the drill and it forms a pair of parallel op osed shoulders 8 and 9 which are formed anc connected integrally by the stock and, hence, they occupy a permanent or unalterable relation with respect to one another.

The swivel handle which enables the drill to be rotated about the drill rod as an axis without requiring the operator to release his grip on the tool is composed in the present instance of a pair of handle sections 10 and 11, these sections being preferably formed as duplicates or halves, each half or section of the handle embodying a grip portion 12 which is preferably of segmental form and the two handle sections embody semi-circular or segmental socket sections 13 and 14. These socket sections 13 and 141 when the handle sections are united will form a circular collar which is adapted to lie in the circumferential groove in the body of the drill and between the integrally formed and,

permanently related shoulders. The handle sections are formed separately and are united in such a manner as to cause the segmental socket sections thereon to enter the circumferential groove and to occupy a position between the circumferential shoulders 8 and 9, and after the handle sections have been so united, they are permanently connected by transverse rivets 15 or equivalent means and then the circular collar formed by the segmental sockct sections 13 and 14 is permanently confined in the circumferential groove of the drill and between the fixed and integrally formed shoulders 8 and 9. A handle and mounting of this character obviously dispenses with the necessity of using threads, nuts, and other separate parts which are liable to loosen, the construction bein comparatively simple and inexpensive and when the handle is once applied and locked, it is impossible for the parts to loosen.

I claim as my invention 1. The combination of a fluid-actuated tool having a body provided with spaced shoulders formin a circumferential groove between them, an a swivel handle composed 2. The combination of a tool having a body, the stock of which is grooved circumferentially to form a pair of integral 'ermanently fixed shoulders and a swivel andle composed of separately formed sections,

each handle having a grip portion and a segmental socket section, said socket section occupying a posit-ion between said shoulders when the handle is united, and means for securing the handle sections in united relation.

3. In a hand-manipulated fluid-actuated tool, the combination of a casing, a piston reciprocable longitudinally therein, a drill rod fitted to the forward end of the casing, a turning handle attached to and projecting laterally from said casing, a head at the rear end of the casing provided with a circumferential groove forming permanently related integral annular shoulders, and a swivel handle for permitting turning of the casing about its longitudinal axis comprising complemental sections which are formed sepa-r rately and are provided with segmental portions adapted to be engaged in the annular groove in the head of the casing, such handle sections being permanently united H. S, PHILLIPS, H. B.- LOWDEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

